package sanyuesan;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ListDemo {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        list.add("1");
        list.add("2");
        list.add("3");
        list.add("4");
        list.add("5");
        System.out.println("list:" + list);
        String e = list.get(2);
        System.out.println(e);

        for (int i = 0; i < list.size(); i++) {
            System.out.println(list.get(i));
        }
        Iterator<String>it=list.listIterator();
        while (it.hasNext()){
            System.out.println(it.next());
        }
        for (String s:list){
            System.out.println(s);
        }
        System.out.println("-----------");

        String old =list.set(2,"six");
        System.out.println("list:"+list);
        System.out.println(old);

        String s= list.remove(2);
        System.out.println("list:"+list);
        System.out.println(s);

        list.add(3,"seven");
        System.out.println(list);

    }
}